Refrigerator.



flNrrn STATES PATENT OFFICE.

HERM'ANN ROBINSOHN, OF CHARLOTTENBURG, GERMANY.

REFRIGERATOR.

SPECIFICATION forming part of Letters Patent NO. 697,888, dated April 15, 1902.

Application filed January S, 1901. Serial No. 42,571. (No model.)

To ((,ZZ 107mm, it' nuty conccrn:

Be it 'known that I, HERMANN RoBiNsoHN, chief engineer, a citizen of the German Empire, residing at Cauerstrasse 35, Charlottenburg, Germany, have invented certain new and useful lmprovements in Refrg'erators; and I do hereby declare the following' to be a full, clear, and exact description of the in- Vention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to refrigerators, and has for its object to provide a structure of this class in which are contained a doublewalled case and double-walled door, the walls of which are connected only by non-condueting materials, the food-chamber being hermetically closed, non-conducting stays for inereasing the stability of the case,'and an ice-box suspended in the food-Chamber for supporting the ice and reeeiving and retaining' the water produced by the melting thereof.

With this object in view my invention consists in the improved construction, arrangement, and combination of parts hereinafter fully described and afterward speeifically claimed.

In the accompanying' drawings, Figure 1 is a Vertical section through the case constructed in accordance with my invention. Fig. 2 is an enlarged sectional view of a connection or stay between the outer and inner walls.

Insulating-frames are arranged at the j oints between the double walls q' of the door and the double walls t' q of the case, respectively, which frames consist of asbestos pasteboard a, with insulating-paper e at the inside and impermeable asbestos texture or fabric b at the outside. Vooden strips d d d' d' are provided at the edges of the insulating materials, by means of which the insulating materials a Z) c a' b' o' are fastened to the walls q t' of the case and to the walls q' 'i' of the door, respectively. The fastening,r of the insulating materials a Z) o and a' c' Z/ on the walls of the case and the walls of the door, respectively, by means of strips d d' may be effected, for example, in this way, to Wit: The edges of the asbestos texture Z) are secured between the strips (Z don the walls q /i of the case, and the edges of the asbestos texture b' are secured 'between the strips d' (Z' on the walls q' i' of the door, after which spaces 0 o' between the outer walls and the inner walls of the case and the outer walls and inner walls of the door, respectively, are filled with any suitable non conducting material. (Not shown.)

'r is the food-chamber of the refrigerator, which is provided with an ice-box m, suspended by means of the brackets Z. If the refrigerator is closed, it is impossible for the frigidity to find a convenient way of escape to the outside, as the insulating layer is nowhere interrupted.

To increase the stability of the case, noncondueting; Stays are properly secured bctween the outer and inner walls of the case, as shown in Fig. 2 on an enlarged scale. The stays are made of thick asbestos pasteboard e, supported by wooden strips f, which are fastened by screws f' to the outer and inf ner walls q 'i of the case, the space between strips e andfbeing filled with non-conducting material g.

l-Iaving thus fully described my invention, what I claim as new, and desire to secure by Letters Patent of the United States, is-

1. A refrigerator provided with a doublewalled case having a suitable door-opening, a wooden frame secured to each wall around said opening, a non-conducting layer connecting the wooden frames of the inner and outer walls and surrounding the door-opening, a double-walled door adapted to close the door-opening, a wooden frame surrounding each wall of the door, and a non-conducting layer connecting" and secured to said wooden frames `of the door-walls and surrounding the space between said door-walls, substantially as described.

2. A refrigerator provided with a doublewallcd case having a suitable door-opening, a wooden frame secured to each wall around said opening, a non-conducting layer conneeting' the wooden f rames of the inner and outer walls and surrounding the door-opening, and a non-conducting stay fol` the walls, In testimony whereof I affix my signature eomprising opposite wooden strips seeured in presence of two witnesses. to the inner and outer walls, strips of asbestos board conneoting said strips, and non- 5 condnoting paeking in the space between the Witnesses:

Wood andl asbestos st'l'ips,` snbstantially as HENRY HASPER, described. WOLDEMAR I-IAUPT.

HERMANN ROBINSOHN. 

